Printing-press gripper.



F. D. HAKE. PRINTING PRESS GRIPPER. APPLICATION FILED mm: 25, 1908.

Patented June 15, 1909. 3 SHEETS-SHEET 1.

flflmegj F. D. HAKE. PRINTING PRESS GRIPPBR. APPLICATION FILED mm: 25,1900.

924,983. Patented June 15,1909.

2 EH33 IS-SHEET 2.

, amt/m4 FRANZ D. HAKE, OF MILWAUKEE, WISCONSIN.

PRINTING-PRESS GRIPPER.

. vide simple, economical and readily adjustable gripper attachmentsdesigned to overcome the difficulties heretofore experienced in holdingsheets to be printed upon firmly on the tympans of platenprinting-presses, said attachments serving to prevent inaccuracy ofregister, shifting, picking and pulling of the fed sheets, theirentanglement with mechanism or inking-rollers of the presses and theblurring of ink on said sheets.

Figure 1 of the drawings represents a plan view of gripper attachmentsin accordance with my invention applied in connection with the gripper-bar of a printin g-press parts in the showing being partly broken away;Fig. 2, a similar view of a fragment of an adjustable upper bargripper;Fig. 3, a crosssection view indicated by line 33 in Fig. Fig. 4, anelevation of different sizes of angular yoke rod-grippers; Fig. 5, adetail sectional View indicated by lines 55 in Fig. 1; Fig. 6, a planview of a fragment of a lower bar-gripper inverted; Fig. 7, a sectionalview of the same indicated by line 77 in Fig. 6; Fig. 8, a sectionalview indicated by lines 88 in Fig. 1; Fig. 9, aplan View of a fragmentof an upper bar-gripper inverted and adjustably connected to agripper-bar arm;

Fig. 10, a partly sectional elevation of what is shown in Fig. 9, theview being indicated by line 1010 in said Fig. 9, and Fig. 11, a partlysectional view illustrating the upper ar-gripper and a rod-gri per.

Referring by letter to t e drawings, A indicates the tympan and B thegripper-bar of an ordinary platen printing-press. I centrally notch theledge b of the gripper-bar to provide a guideway for a longitudinallyslotted shank C, and a slot-engaging bolt 0 is employed to fasten theshank to said'bar in adjusted position.

A lower bar-gripper is employed in con- Specification of Letters Patent.

Application filed June 25, 1908.

Patented June 15, 1909.

Serial No. 44.0,225.

nection with the upper end of the shank C at right-angles to the same.This lower bargripper is herein shown as comprising a pair oflongitudinally slotted sections D, D, in sliding engagement to providefor varying the length of said bar, but either section, slotted asaforesaid or otherwise, is in itself a bar-gripper and the length ofsame may be indefinitely varied. The twowection bargripper herein shownmay be lengthened or shortened by an adjustment of either or bothsections that are held in adjusted position by binding screws cl,extending through their slots into the shank C aforesaid. If butone ofthe sections D be employed as a bargripper the same is secured inadjusted position by said binding-screws.

The upper edge of the lower bar-gripper, in any form, is inturned at asuitable angleto attack sheets upon the tympan A, and gagepin clearancenotches e are provided in this inturned edge of said bar, saidinturnededge being in practice extended over and above the gage-pins tohold the lower margin of a sheet bed to the press.

One or both ends of the lower bar-gripper in any form is provided withan inner stationary block f transversely apertured'for the engagement ofa rod-gripper E that is flush with the inner side of the block through aslot of the same intersecting said aperture,

and the thickness of said block is such that said rod-gripper is 011 thesame sheet-attacking plane as the inturned edge of said gripperbar. Therod-grippers havesliding adjustment in their respective blocks andabindingscrew g-is employed to secure each rodgrip per in its adjustedposition. If a rod-gripper be otherwise than straight, the surface ofsame opposing the binding screw is preferably slabbed as shown at h inFig. 1, to prevent turning of said gripper-in theblockf with which it isengaged. In Fig. 1, I have shown a straight rod-gripper and an angularlycrooked rod gripper, it being my intention to sup )ly the trade withrod-grippers in sets variab e as to extent of crook, either angular orcurved, or pressmen may readily make crooked rod-grippersfrom lengths ofwire of suitable gage by bending the same to form the crooks desired. InFig. 4, I show a plurality of angularly bent rod-grippers E in the formof angular yokes of varying dimensions it being my intention to supplythe trade with such grippers in sets ranging from a predeterminedminimum to a predetermined maximum of width for use in connection withan expansile and contractile bargri per having the sections thereofprovided witi blocks and binding-screws similar to those aforesaid, butpressmen may readily make angular yoke bar-grippers of various widths bybending lengths of wire of suitable a e.

b An upper longitudinally slotted bar-griper F is shown provided withbeveled endblocks t that match beveled edges of arms G bolted to thegripper-bar B, and toothed dogs j in pivotal connection with said upperbargripper engage with rack-toothed edges of said arms, the engagementbeing maintained by cam-latches is also in pivotal connection with theaforesaid upper bar-gripper. By means of the dogs and cam latchesaforesaid the upper bar-gripper is securely held in adjusted positionvertically of the gripper-bar arms. In cross-section, the upper bar-gripper is similar to the lower bar-gripper or a section of same except thatits inturned sheet-attacking edge is reverse to that of said lowerbarripper. This inturned edge of the upper bar-gripper is notched atintervals of its ength for the engagement of r0d-grippers similar tothose described in connection with the lower gripper-bar, andguide-blocks f similar to the ones aforesaid, except that the same aremovable along said upper bar-gripper and held in adjusted position bybindingscrews m extending through the bar-slots into said blocks. Theseblocks are also provided with binding-screws n for the rodgrippers.

lt is practical, as shown in Figs. 2 and 3, to have the upperbar-gripper comprise a pair of sections F, F, adjustable one upon theother to vary the length of said bar-gripper, one of said sections beingprovided with a block p for the engagement of binding-screws g thatextend through the slots of both sections. The arms G are adjustable inconnection with the gripper-bar B to permit the lengthening orshortening of the two section upper bar-gripper.

From the foregoing it will be understood that 1 provide simple,economical means for horizontally gripping and holding on the presstympan, the upper, or lower edge or 0th of a sheet to be printed upon,and for gripping vertically of said sheet at any desired point in themost limited spaces between lines, there being full length contact ofany and all the bar-grippers and rod-grippers with the aforesaid sheet,each rod-gripper being immovably secured in connection with abar-gripper block with which it is engaged, and each bar-gripperlikewise secured in connection with its support.

The gripper assemblages are organized with especial reference to readyadjustment of the various gripper devices both horizontally andvertically to reach any possible accessible point of a form on a press,and especial reference is had to the provision for gripping the sheet tobe printed upon adj acent to the lower, or upper edge or both of saidedges of said sheet and at any accessible point in any direction in andbetween typematter or plates, as well as at one or both sides of same asvarious jobs of printing may require for the best results possiblyobtainablef I claim:

1. A printing press gripperbar and its arms, and a horizontalbar-gripper having a shank in vertically adjustable connection with saidbar midway between the arms of same.

2. A shank for vertically adjustable connection with a printing pressgripper bar auxiliary to the gripper-bar arms, and a horizontalbar-gripper in independently adjustable connection with the aforesaidshank.

3. A horizontal bar-gripper provided with a shank for verticallyadjustable connection with a printing-press gripper-bar auxiliary to thegripper-bar arms, and a vertically disposed rod-gripper in connectionwith said bar-grippe11 4. A horizontal bar-gripper provided with a shankfor vertically adjustable connection with a printing-press gripper-barauxiliary to the gripper-bar arms, and a vertically disposed rod-gripperin independently adjustable connection with said bar-gripper.

5. A shank for vertically adjustable connection with a printing-pressgripper-bar auxiliary to the gripper-bar arms, and a horizontalbar-gripper comprising sections in independently adjustable connectionwith the aforesaid shank.

6. A shank for vertically adjustable connection with a printing-pressgripper-bar auxiliary to the gripper-bar arms, a horizontal bar-grippercomprising longitudinally slotted sections in slidmg engagement on theaforesaid shank, and slot-and-shank engaging binding-screws for thegripper-bar sectlons.

7. A shank for vertically adjustable connection with a printing-pressgripper-bar, a

horizontal bar-gripper comprising sections in independently adjustableconnection with the aforesaid shank, and means in connection with eachgripper-bar section for the attachment thereto of a vertically disposedrodgripper.

8. A horizontal bar-gripper having a shank for vertically adjustableconnection with the gripper-bar of a printing-press and having its upperedge inturned to attack sheets to be printed upon, a block rigid uponthe underside of the bar-gripper and having a transverse apertureintersected by a slot, a rod-gripper engaging the aperture of the blockto be flush with said block through the slot of same, and abinding-screw in connection with said bargripper to secure therodgripper in adjusted position.

9. A horizontal bar-gripper provided with a shank for verticallyadjustable connection with a printing-press gripper-bar, the upper edgeof the bar-gripper being inturned to attack sheets to be printed uponand extend over and above gage-pins to hold lower margins of said sheet.

10. A pair of edge-beveled arms attachable to the gripper-bar of aprinting-press, a horizontal bar-gripper provided with beveledend-blocks that match the beveled edges of said arms, and means inconnection with the bar-gripper for clamping the blocks of same incontact with the aforesaid arms.

11. A pair of arms attachable to the gripper-bar of a printing-press, alongitudinally slotted horizontal bar-gripper in vertically adjustableconnection with the arms, a transversely apertured and slotted blockfacing the underside of the bar-gripper, a bindingscrew extendingthrough the bar-gripper slot into the block, a rod-gripper engaging theblock aperture flush with said block through the slot in same, and abinding-screw extending through said bar-gripper slot into the aforesaidblock against the rod-gripper.

12. A pair of arms attachable to the gripperbar of a printing-press, alongitudinally slotted horizontal bar-gripper in vertically adjustableconnection with the arms, its sheet-attacking edge being inturned andnotched at intervals, a transversely apertured and slotted block facingthe underside of the bar-gripper, a binding-screw, extending through thebar-gripper slot into the block, a rod-gripper engaging the blockaperture and a bar-gripper notch flush with said blockthrough the slotof same, and a bindingscrew extending through said bar-gripper slot intothe aforesaid block against the rodgripper.

13. A pair of arms attachable to the gripper-bar of a printing-press,the outer edge of the free end of each arm being beveled and the inneredge rack-toothed, a horizontal bargripper having beveled end blocksmatching the bevel edges of the arms with which they are engaged,toothed dogs in pivotal connection with the bar-gripper to engage theracktoothed edges of said arms, and cam-latches also in pivotalconnection with said bargripper for maintaining the engagement of saiddogs with the aforesaid arms.

14. A horizontal bar-gripper provided with a shank for verticallyadjustable connection with a printing-press gripper bar, a pair of armsattachable to the gripper-bar, and another horizontal bar-gripper invertically adjustable connection with the arms.

15. A horizontal bar-gripper provided with a shank for verticallyadjustable connection with a printing-press gripper-bar, a pair of armsattachable to the gripper-bar, another horizontal bar-gripper invertically adjustable connection with the arms, and vertically disposedrod-grippers in independently adjustable connection with saidbar-grippers.

In testimony that I claim the foregoing I have hereunto set my hand atMilwaukee in the county of Milwaukee and State of Wisconsin in thepresence of two witnesses.

FRANZ D. I-IAKE.

Witnesses N. E. OLIPHANT, GEORGE FELBER.

